400 SE; from 06.1993: S 420
- Combustion principle: four-stroke petrol (with manifold injection and emission control system with closed-loop 3-way catalyst)
- Configuration: front, longitudinal; vertical
- Engine type: M 119 E 42 / 119.971
- Number of cylinders / arrangement: 8 / 90° V; light-alloy block
- Bore x Stroke: 92.0 x 78.9 mm
- Total displacement: 4196 cc
- Compression ratio: 10.0; from 09.1992: 11.0
- Rated output: 210 kW / 286 hp at 5700 rpm;~from 09.1992: 205 kW / 279 hp at 5700 rpm
- Rated torque: 410 Nm at 3900 rpm; from 09.1992: 400 Nm at 3900 rpm
- Number of valves / arrangement: 2 intake, 2 exhaust / V-shaped overhead
- Valve operation: 2 overhead camshafts per cylinder bank (intake camshafts adjustable)
- Camshaft drive: double roller chain
- Fuel system: microprocessor-controlled injection system with hot-wire air-mass sensor (Bosch LH-Jetronic)
- Fuel tank: position / capacity: above the rear axle / 100 l
- Frame design: steel unit body
- Front-wheel suspension: double wishbone
- Rear-wheel suspension: multilink suspension (hydropneumatic level control optional)
- Front springs: coil springs, torsion bar stabiliser
- Rear springs: coil springs, torsion bar stabiliser
- Shock absorber front/rear: gas-pressure shock absorbers
- Steering: recirculating-ball parameter power steering
- Brake system (foot brake): hydraulic dual-circuit brake system with vacuum booster and antilock system; internally ventilated four-wheel disc brakes
- Parking brake (hand brake): mechanical (foot-operated), acting on rear wheels
- Wheels: sheet-steel wheels (light-alloy wh. optional, from 09.1991 as standard
- Wheel rims: 7 1/2 J x 16 H 2
- Tires: 235/60 ZR 16
- Driven wheels: rear wheels
- Drivetrain: divided cardan shaft
- Gearing: 4-speed automatic transmission
- Availibility: as standard
- Shifting: central floor gear shift lever
- Clutch: hydraulic torque converter in automatic transmission
- Transmission type: planetary gear system
- Gear ratios: I. 3.87; II. 2.25; III. 1.44; IV. 1.0; R. 5.59
- Final drive ratio: 2.82
- Maximum speed: 245 km/h
- Acceleration 0-100 km/h: 7.9 s; from 09.92: 8.3 s
- Fuel consumption: 10.1 / 12.2 / 16.7 l; from 09.1992: 9.7 / 11.7 / 16.0 l
- by Guideline: 80/1268/EEC: figures apply to 90 km/h / 120 km/h / urban cycle
- Wheelbase: 3040 mm
- Front / rear track: 1603 / 1576 mm; from 06.1993: 1606 / 1579 mm
- Length: 5113 mm
- Width: 1886 mm
- Height: 1495 mm; from 06.1993: 1486 mm
- Kerb weight: 1990 kg
- by Guideline: DIN 70020 (ready to drive, including fuel, spare wheel and tool kit)
- Gross weight: 2510 kg; from 09.1991: 2640 kg
- Units produced: a total of 14,277 (until 08.1998)
- Prices: 03.1991: DM 107,958.00
09.1991: DM 111,934.00
02.1992: DM 115,197.00
10.1992: DM 115,995.00
01.1993: DM 120,347.50